how to make a rain sensor at home and simple way //

 

 

step-1

Make a sensor using copper pipe

but do not short the terminal 

step-2

connect collector terminal of bc547 transistor to the

first terminal of sensor terminal

step-3

then connect the another terminal of sensor to

the base terminal of transistor

step-4

connect the emitter terminal of transistor to the 

positive terminal of buzzer 

step-5

connect the positive terminal of led light to the

negative terminal of buzzer

step-6

connect the positive terminal of battery to the 

collector pin of the transistor and connect the

 negative terminal of 6 volte battery to the negative

terminal of the led 

circuit diagram-

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